Thank you for your questions about these backgrounds. Those are real, natural backgrounds. They appear blurred because they’re relatively far, about 10 ft (3 m), from the hummingbird and because the depth of field is very small, about half an inch (1 cm).

Susan Bulger

Posted at 20:37h, 26 May

Cats are excellent non-native predators and letting them outside is unfair to native wildlife squeezed in ever smaller places between our homes. Catch, spay and release is a terrible cat program. They will kill hundreds of native species in their miserable lifetimes.